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authorGeoff Liu <g@geoffliu.me>2015-04-17 14:06:47 -0400
committerGeoff Liu <g@geoffliu.me>2015-04-17 14:06:47 -0400
commit49e8dd42636199f19d250bc6b169764f5ebe0ed7 (patch)
tree4a91f68d8c75720eb8c1cf288fcbeba0f841e62c /c.html.markdown
parent61510ee92caaca9c841da6e40c8e1d680d1b7e34 (diff)
parentb44aded453d94d5a196356f3c05c678d6ec9323c (diff)
Merge remote-tracking branch 'upstream/master'
Diffstat (limited to 'c.html.markdown')
-rw-r--r--c.html.markdown4
1 files changed, 2 insertions, 2 deletions
diff --git a/c.html.markdown b/c.html.markdown
index 1696d28f..d3f20eda 100644
--- a/c.html.markdown
+++ b/c.html.markdown
@@ -234,7 +234,7 @@ int main() {
// same with j-- and --j
// Bitwise operators!
- ~0x0F; // => 0xF0 (bitwise negation, "1's complement")
+ ~0x0F; // => 0xFFFFFFF0 (bitwise negation, "1's complement", example result for 32-bit int)
0x0F & 0xF0; // => 0x00 (bitwise AND)
0x0F | 0xF0; // => 0xFF (bitwise OR)
0x04 ^ 0x0F; // => 0x0B (bitwise XOR)
@@ -242,7 +242,7 @@ int main() {
0x02 >> 1; // => 0x01 (bitwise right shift (by 1))
// Be careful when shifting signed integers - the following are undefined:
- // - shifting into the sign bit of a signed integer (int a = 1 << 32)
+ // - shifting into the sign bit of a signed integer (int a = 1 << 31)
// - left-shifting a negative number (int a = -1 << 2)
// - shifting by an offset which is >= the width of the type of the LHS:
// int a = 1 << 32; // UB if int is 32 bits wide